Seth Rogen appeared before a Senate committee at Capitol Hill earlier this week.

The Hollywood actor spoke about the effects of Alzheimer's disease before the Senate Appropriations Subcommittee on Labor, Health, and Human Services.

Advertisement - Continue Reading Below

He explained that his mother-in-law Adele Miller was diagnosed with the illness at the age of 55, and how it has left her unable to look after herself.

"I started dating my wife Lauren nine years ago when her mother was almost 54 years old. It was during this trip, the first time I met my now mother-in-law, that Lauren first admitted to herself and then to me that something was off with her mother," he said.

"Soon after this trip at 55 years old Lauren's mother was diagnosed with early onset Alzheimer's.

"After forgetting who she and her loved ones were, she forgot how to speak, feed herself, dress herself, all by age of 60."

Rogen also described how he and his wife set up a charity to raise funds for people affected by Alzheimer's, called Hilarity for Charity.

He finished: "I came here today for a few reasons. One, I'm a huge House of Cards fan. Two, people need more help. I've personally witnessed the massive amount of financial strain this disease causes. Three, to show people they are not alone, so few people share their personal stories."